How do I send an image to a NodeJS server?

Create a server using nodeJS and save the image using the Multer module.
I check with a postman, I can not go to Unreal and try to make it.
I’ve imported the image, converted it to base64, and sent it to me,
Multer does not recognize file as …
What should I do??
We are communicating with the server side using the LE plugin.

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Were you able to accomplish this? I have to do exactly the same, from my application to my web server. Thanks in advance!